Globally ice-covered oceans have been found on multiple moons in the solar system [1]}, [2]}, [3]}, [4]} and spark our curiosity in part due to their potential to provide hospitable environments for life [5]}, [6]}, [7]}, [8]}. Earth's oceans may also have been covered by a global ice sheet during the so-called “Snowball Earth” events, and indeed eukaryotic life not only appears to have survived through these episodes, but may have evolved significantly during them [9]}. However, relatively little is known about these oceans beyond their existence, and due to our inability to directly observe them at present, we heavily rely on models to decipher their mysteries.
